Finding the Fourth Proportional to 490,857.71, 736,287.57 and 135,872.78
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Solution
The fourth proportional to 490,857.71, 736,287.57 and 135,872.78 is: 203,809.44
Step by Step Solution
- Step 1: Write the proportion equation
490,857.71 : 736,287.57 = 135,872.78 : x - Step 2: Convert to fraction form
490,857.71/736,287.57 = 135,872.78/x - Step 3: Cross multiply
490,857.71x = 736,287.57 × 135,872.78 - Step 4: Simplify right side
490,857.71x = 100,041,435,333.91 - Step 5: Solve for x
x = 100,041,435,333.91/490,857.71 - Step 6: Final answer
x = 203,809.44
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.